ΔE 10.7, fair: the same colour family, but not a straight swap. Primaris Red is a little lighter, more saturated than Dragon Red.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Primaris Red is a little lighter, more saturated than Dragon Red.
The same difference applies the other way round: Dragon Red is a little darker, more muted.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Dragon Red on the colour wheel See Primaris Red on the colour wheel
All matches: Dragon Red equivalents · Primaris Red equivalents